Stigmaeus longipilis ( Canestrini, 1889 )

Stigmaeus longipilis ( Canestrini, 1889)

( Figs. 10–18 View FIGURES 10 – 14 View FIGURES 15 – 18 )

Stigmaeus longipilis Berlese (1910)

Storchia longipilis Oudemans, 1923: 145 –155

Stigmaeodes elongates var. longipilis — Canestrini, 1889: 449 Stigmaeus longipilis Oudemans, 1927: 257 –263

Stigmaeus eutrichus Berlese, 1910 — Summers, 1962: 511 –512 Stigmaeus eutrichus Berlese, 1910 — Wood (1973) Stigmaeus longipilis Liang & Hu, 1987: 308

Stigmaeus longipilis Kuznetsov, 1978: 682 –694

Stigmaeus longipilis Berlese, 1910 — Spongoski, 2008: 118

Diagnosis (Female). Prodorsal shield smooth, dorsum with 14 pairs of setae, femora I–IV 6 - 5 -3 - 2 setae, genua I-IV 3 + (1ĸ) - 3 (1ĸ) - 0 - 1, aggenital setae three pairs; distance of vi/vi - vi 1.20 (1.40), vi/vi-vi 0.30 (0.28), c1 / c1-c1 0.48 (0.55); c1-c1: d1 - d1: e1 - e1: f1 - f1 0.61 - 0.63: 0.57–0.55: 0.49–0.48: 1.0. Ratio: ve/sci 11.41–11.91.

Female (n = 2). Color in life red. Measurements as follows: Length of body (excluding gnathosoma) 443– 446); width 175–179; length of leg I 178 –181; leg II 138–141; leg III 131–136, leg IV 131–162. vi 29–31, ve 131– 137.

Dorsum ( Fig. 10 View FIGURES 10 – 14 ). Prodorsal shield almost oblong and smooth; with three pairs of setae ( vi, ve, sci), with a pair of eyes 8–9 and post ocular bodies 30–33 (Fig. 30); median opisthosomal shield with three pairs of setae ( c1, d1, e1) and three pairs of paired (lateral opisthosomal, intercalary and lateral zonal shields) and two unpaired shields (median and suranal) ( Fig. 10 View FIGURES 10 – 14 ). Length of dorsal setae as follows: vi 29–31, ve 131 -137, sci 11–12, sce 32–35, c 1 21 -25, c 2 96–99, d 1 19–21, d 2 18–22, e 1 20 –24, e2 93 –98, f 1 27–29, h 1 28–29, h2 41–44; distances between dorsal setae: vi - vi 24–22, ve - ve 41–37, vi - ve 21–23, sci - sci 39–44, sce - sce 96–101, ve-sci 14–16, c1-sce 57–61, c2 - sce 64– 67, c1 - c1 44–46, c1 - c2 54–57, c2 - c2 52–58, c1 - d1 50–54, d1 - d1 40–41, d1 - d2 44–46, d1 - e 1 50, d1 - e 2 71–74, d2 - e 2 70–75, d2 - d2 123–128, e1 - e 1 34 -36, e2–e2 122–125, e1 - e 2 42–46, e1 - f1 40 -43, f1 - f1 70–75, f1 - h1 41–44, h1 - h 1 29– 27, f1 - h 2 30–34, h2 - h2 72–75; ratio: vi/vi - vi 1.20–1.40, c1 / c1 - c1 0.48–0.55, d1 / d1 - d1 0.48–0.51, e1 / e1 - e 1 0.59– 0.67, f1 / f1 - f1 0.38–0.39, h1 / h1 - h1 0.97–1.04, h2/h2 - h2 0.57–0.58, h1/h2 0.70–0.69, c1 - c1: d1 - d1: e1 - e1: f1 - f1 0.63– 0.61: 0.57–0.55: 0.49–0.48: 1.0.

Venter ( Fig. 14 View FIGURES 10 – 14 ). Ventral cuticle transversely striated between coxisternae II-III; coxae I-II and III-IV surrounded by longitudinal striae ( Fig. 14 View FIGURES 10 – 14 ). Length of setae la 26–28, 1b 22–26, 1c 19–21, 2b 21–24, 2c 20–23, 3a 23– 25, 3b 19–21, 3c 20–22, 4a 21–23, 4b 18–20 and 4c 18–22. Aggenital ( ag1,3) setae as long as pseudanal setae ( ps2,3); ag2 longer than ag1, 3; measurements of setae: setae ag 1 20–21, ag 2 27–31, ag 3 19–22, g 1 14–15, ps1 32–35, ps 2 21–23, ps 3 23–25. Distances: ag1 - ag 1 19–21, ag2 - ag 2 22–25, ag3 - ag3 44–46, ps1 - ps 1 17–19, ps2 - ps 2 27–29, ps3 - ps 3 27–30.

Gnathosoma ( Figs. 11-13 View FIGURES 10 – 14 ). Subcapitulum with two pairs of subcapitular setae ( Fig. 13 View FIGURES 10 – 14 ), m 20–21 and n 20–22, two pairs of adoral setae, or 1 15–16, or 2 26–29; distances: or1 - or 1 10–11, or2 - or 2 10–12, m- m 19–21, n -n 20–22, or1 - m 18–22, m - n 13–15 ( Fig. 11 View FIGURES 10 – 14 ). Chelicerae free 75–78, movable digit 64–70. Palp five-segmented; palp tarsus with four simple setae, tri-dentate eupathidion + one simple eupathidion + one solenidion; palp tibia with two setae + one well developed claw + one accessory claw; palp genu with two setae; palp femur with three setae ( Fig. 12 View FIGURES 10 – 14 ).

Legs ( Figs. 15-18 View FIGURES 15 – 18 ). Legs about half length of body. Setal formulae of leg segments as follows (solenidia, in parenthesis): coxae 2 + (1ε p) - 2 - 2 - 2; trochanters 1 - 1 - 2 - 1; femora 6 - 5 - 3 - 2, genua 3 + 1ĸ - 2 - 0 - 1; tibiae 5 + 1φρ + 1φ - 5 + 1φρ - 5 + 1φρ - 5 + 1φρ; tarsi 13 + 1ω - 8 + 1ω - 7 + 1ω - 7 + 1ω. Length of solenidia: I ω 17– 19, II ω 13–16, III ω 11–12, IV ω 8–9. Coxa I contains supracoxal spine-like seta 1ε p 3-4 long.

Remarks. The Iranian specimens exhibit most of the characters of the original description of Stigmaeus longipilis (Canestrini) . However, the following differences were observed: length of solenidion on tarsus I (ω) 17–19 [in Utah ( USA) specimens 12]; prodorsal shield almost oblong but triangular in Russian specimens; seta c2 longer than Russian specimens, ratio c1/c2 0.21–0.25 in Iranian specimens versus 0.29 in Russian specimens. Ratio: ve/sci 11.41–11.91 in Iranian specimens versus 10.4 in the original description and 11.2 in the Turkish specimens.

Distribution. This species is recorded from Turkey ( Koç & Ayyilldiz 1997), Italy ( Berlese 1910; Wood 1973), USA ( Summers 1962), Germany ( Oudemans 1927), Ukraine (Kuznetsov 1978).

Material examined. Two females were collected from soil under hazelnut trees ( Corylus avellana L.) [Betulataceae], vicinities of Ardabil city, Ardabil province Iran (38° 14' 57" N, 48° 18' 5" E, 1263 m a.s.l.); 2 August, 2010; by M. Pahlevani.